20415645

素因数分解:

$3^7\times 5^1\times {\mathrm{1867}}^1$

素因数の和:1893

約数の個数: 32

約数和(自身を含む): 36762240

約数和(自身を除く): 16346595

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1867, 2187, 3645, 5601, 9335, 10935, 16803, 28005, 50409, 84015, 151227, 252045, 453681, 756135, 1361043, 2268405, 4083129, 6805215, 20415645]

約数ペア:

[(1, 20415645), (3, 6805215), (5, 4083129), (9, 2268405), (15, 1361043), (27, 756135), (45, 453681), (81, 252045), (135, 151227), (243, 84015), (405, 50409), (729, 28005), (1215, 16803), (1867, 10935), (2187, 9335), (3645, 5601)]